<template>
    <div class="goods-comment">
      <!-- 商品评价头部 -->
      <div class="head" v-if="commentInfo">
        <div class="data">
          <p><span>{{commentInfo.salesCount}}</span><span>人购买</span></p>
          <p><span>{{commentInfo.praisePercent}}</span><span>好评率</span></p>
        </div>
        <div class="tags">
          <div class="dt">大家都在说：</div>
          <div class="dd">
            <a @click="changeTage(i)" v-for="(item, i) in commentInfo.tags" :key="item.title" href="javascript:;" :class="{active: currIndex === i}">{{item.title}}（{{item.tagCount}}）</a>
          </div>
        </div>
      </div>
      <div class="sort" v-if="commentInfo">
        <span>排序：</span>
        <a href="javascript:;" :class="{active: reqParams.sortField === null}" @click="changeSort(null)">默认</a>
        <a href="javascript:;" :class="{active: reqParams.sortField === 'createTime'}" @click="changeSort('createTime')">最新</a>
        <a href="javascript:;" :class="{active: reqParams.sortField === 'praiseCount'}" @click="changeSort('praiseCount')">最热</a>
      </div>
      <!-- 评价列表 -->
      <div class="list" v-if="commentList">
        <div class="item" v-for="item in commentList" :key="item.id">
        <div class="user">
          <img :src="item.member.avatar" alt="">
          <span>{{ translateNickname(item.member.nickname) }}</span>
        </div>
        <div class="body">
          <div class="score">
            <i v-for="i in item.score" :key="i + 's'" class="iconfont icon-wjx01"></i>
            <i v-for="i in 5 - item.score" :key="i + 'k'" class="iconfont icon-wjx02"></i>
            <span class="attr">{{ translateData(item.orderInfo. specs) }}</span>
          </div>
          <div class="text">{{ item.content }}</div>
          <!--评价图片 -->
          <GoodsCommentImage v-if="item.pictures.length" :pictures="item.pictures"/>
          <div class="time">
            <span>{{ item.createTime }}</span>
            <span class="zan"><i class="iconfont icon-dianzan"></i>{{ item.praiseCount }}</span>
          </div>
        </div>
      </div>
      </div>
      <!-- 分页组件 -->
      <XtxPagination v-if="total" :total="total" :pageSize="reqParams.pageSize" :currentPage="reqParams.page" @current-change="changePageFn"/>
    </div>

  </template>
  
  <script>
  import {findCommentInfoByGoods, findCommentListByGoods} from '@/api/product'
  import { inject, reactive, ref, watch } from 'vue'
  import GoodsCommentImage from './goods-comment-image.vue'
  export default {
    name: 'GoodsComment',
    components: {GoodsCommentImage},
    setup () {
      const currIndex = ref(0)
      const commentInfo = ref(null)
      const goods = inject('goods')
      findCommentInfoByGoods(goods.value.id).then(data => {
        data.result.tags.unshift({title: '有图', tagCount: data.result.evaluateCount, type: 'img'})
        data.result.tags.unshift({title: '全部评价', tagCount: data.result.hasPictureCount, type: 'all'})
        commentInfo.value = data.result

      })
      const changeTage = (i) => {
        currIndex.value = i
        const tag = commentInfo.value.tags[i]
        if(tag.type === 'all') {
          reqParams.hasPicture = null
          reqParams.tag = null
        } else if (tag.type === 'img') {
          reqParams.hasPicture = true
          reqParams.tag = null
        } else {
          reqParams.hasPicture = null
          reqParams.tag = tag.title
        }
        reqParams.page = 1
      }

      //转换数据
      const translateData = (specs) => {
        return specs.reduce((p, c) => `${p} ${c.name}: ${c.nameValue}`, '').trim()
      }
      //把用户转换成 宁****饿 形式
      const translateNickname = (nickname) => {
        return nickname.substr(0, 1) + '****' + nickname.substr(-1)
      }

      //筛选条件准备
      const reqParams = reactive({
        page: 1,
        pageSize: 10,
        hasPicture: null,
        tag: null,
        sortField: null
      })

      //点击排序
      const changeSort = (sortField) => {
        reqParams.sortField = sortField
        reqParams.page = 1
      }

      //监听数据变化，获取列表数据
      const commentList = ref(null)
      const total = ref(0)
      watch(reqParams, () => {
        //发请求
        findCommentListByGoods(goods.id, reqParams).then(data => {
          commentList.value = data.result.items
          total.value = data.result.counts
        })
      }, {immediate: true} )
      // 改变页面，重新获取数据
      const changePageFn = (newPage) => {
        reqParams.page = newPage
      }
      return {commentInfo, changeTage, currIndex, reqParams, commentList, changeSort, translateData, translateNickname, changePageFn, total}
    }
  
  }
  </script>
  
  <style lang="less" scoped>
  .goods-comment {
  .head {
    display: flex;
    padding: 30px 0;
    .data {
      width: 340px;
      display: flex;
      padding: 20px;
      p {
        flex: 1;
        text-align: center;
        span {
          display: block;
          &:first-child {
            font-size: 32px;
            color: @priceColor;
          }
          &:last-child {
            color: #999;
          }
        }
      }
    }
    .tags {
      flex: 1;
      display: flex;
      border-left: 1px solid #f5f5f5;
      .dt {
        font-weight: bold;
        width: 100px;
        text-align: right;
        line-height: 42px;
      }
      .dd {
        flex: 1;
        display: flex;
        flex-wrap: wrap;
        > a {
          width: 132px;
          height: 42px;
          margin-left: 20px;
          margin-bottom: 20px;
          border-radius: 4px;
          border: 1px solid #e4e4e4;
          background: #f5f5f5;
          color: #999;
          text-align: center;
          line-height: 40px;
          &:hover {
            border-color: @xtxColor;
            background: lighten(@xtxColor,50%);
            color: @xtxColor;
          }
          &.active {
            border-color: @xtxColor;
            background: @xtxColor;
            color: #fff;
          }
        }
      }
    }
  }
  .sort {
    height: 60px;
    line-height: 60px;
    border-top: 1px solid #f5f5f5;
    border-bottom: 1px solid #f5f5f5;
    margin: 0 20px;
    color: #666;
    > span {
      margin-left: 20px;
    }
    > a {
      margin-left: 30px;
      &.active,&:hover {
        color: @xtxColor;
      }
    }
  }
}
.list {
    padding: 0 20px;
    .item {
      display: flex;
      padding: 25px 10px;
      border-bottom: 1px solid #f5f5f5;
      .user {
        width: 160px;
        img {
          width: 40px;
          height: 40px;
          border-radius: 50%;
          overflow: hidden;
        }
        span {
          padding-left: 10px;
          color: #666;
        }
      }
      .body {
        flex: 1;
        .score {
          line-height: 40px;
          .iconfont {
            color: #ff9240;
            padding-right: 3px;
          }
          .attr {
            padding-left: 10px;
            color: #666;
          }
        }
      }
      .text {
        color: #666;
        line-height: 24px;
      }
      .time {
        color: #999;
        display: flex;
        justify-content: space-between;
        margin-top: 5px;
      }
    }
  }


  
  </style>